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Protein Structure


This quiz is based on the various aspects of the structure of protein molecules and amino acids.

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1.

Infectious self-reproducing agents consisting only of protein, with no nucleic acids (hypothesized in 1982 by Nobel Laureate Stanley B. Prusiner) are called :

  exteins

  proteinoids

  proteomes

  Prions

  Half-n-half Clue
 

2.

Which of the following is not an aromatic amino acid ?

  Phenylalanine

  Tyrosine

  Serine

  Tryptophan

  Half-n-half Clue
 

3.

Each protein has a particular 3D structure which is decided by its:

  Quaternary structure

  tertiary structure

  primary structure

  secondary structure

  Half-n-half Clue
 

4.

Which of the following amino acids is polar ?

  Histidine

  Isoleucine

  Leucine

  Valine

  Half-n-half Clue
 

5.

Which of the following is not a type of protein secondary structure ?

  â-pleated sheet

  third level folding to form small globules

  Turns

  á-helix

  Half-n-half Clue
 

6.

The sequence of different amino acids in the polypeptide chain of a protein is called its :

  Quaternary structure

  tertiary structure

  primary structure

  secondary structure

  Half-n-half Clue
 

7.

The Quaternary structure of a protein is :

  its structure resulting from hydrogen bonds between the C=O and N-H groups of different amino acids.

  its structure resulting from interactions between amino acid side chains.

  its structure resulting from the union of more than one protein molecule, called subunit proteins.

  its amino acid sequence

  Half-n-half Clue
 


 
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